Absolute Quantification of Water in Microporous Solids with 1H Magic Angle Spinning NMR and Standard Addition

被引：24

作者：

Houlleberghs, Maarten ^{[1
]}

Hoffmann, Andreas ^{[1
]}

Dom, Dirk ^{[1
]}

Kirschhock, Christine E. A. ^{[1
]}

Taulelle, Francis ^{[1
]}

Martens, Johan A. ^{[1
]}

Breynaert, Eric ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Celestijnenlaan 200F,Box 2461, B-3001 Heverlee, Leuven, Belgium

来源：

ANALYTICAL CHEMISTRY | 2017年 / 89卷 / 13期

关键词：

IN-SITU; QUANTITATIVE H-1-NMR; ZEOLITES; SEPARATION; MOISTURE; HEAT;

D O I：

10.1021/acs.analchem.7b01653

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Zeolites are microporous materials driving industrial scale adsorption, ion exchange, and catalytic processes. Their water content dramatically impacts their properties, but its quantification with Karl Fisher titration or thermal gravimetric analysis is problematic. When standard addition of water is combined with H-1 magic angle spinning (MAS) NMR detection, absolute quantification of water in microporous materials becomes possible. The method was demonstrated on five different, commercially available zeolites.

引用

页码：6940 / 6943

页数：4

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